Pull Tab Time Travel

We came across this discarded pull tab on a walk last week.  “Who still has drinks with disposable pull tabs??”  I wondered.  Then I came to the logical conclusion that it must have a time traveler from the late 60′s or early 70′s.  He or she probably set their dials for a future date within their lifespan so they could get data and statistics to take back to their own time.  They probably took a break from their financial planning while they were here.  I imagine they went for a walk in the woods, pulled the tab off a Mr. Pibb, and carelessly tossed it in the grass.  They littered quite a bit back then.